| Mathbox for Peter Mazsa |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > MPE Home > Th. List > Mathboxes > eldm1cossres2 | Structured version Visualization version GIF version | ||
| Description: Elementhood in the domain of restricted cosets. (Contributed by Peter Mazsa, 30-Dec-2018.) |
| Ref | Expression |
|---|---|
| eldm1cossres2 | ⊢ (𝐵 ∈ 𝑉 → (𝐵 ∈ dom ≀ (𝑅 ↾ 𝐴) ↔ ∃𝑥 ∈ 𝐴 𝐵 ∈ [𝑥]𝑅)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | eldm1cossres 38568 | . 2 ⊢ (𝐵 ∈ 𝑉 → (𝐵 ∈ dom ≀ (𝑅 ↾ 𝐴) ↔ ∃𝑥 ∈ 𝐴 𝑥𝑅𝐵)) | |
| 2 | elecALTV 38309 | . . . 4 ⊢ ((𝑥 ∈ V ∧ 𝐵 ∈ 𝑉) → (𝐵 ∈ [𝑥]𝑅 ↔ 𝑥𝑅𝐵)) | |
| 3 | 2 | el2v1 38270 | . . 3 ⊢ (𝐵 ∈ 𝑉 → (𝐵 ∈ [𝑥]𝑅 ↔ 𝑥𝑅𝐵)) |
| 4 | 3 | rexbidv 3156 | . 2 ⊢ (𝐵 ∈ 𝑉 → (∃𝑥 ∈ 𝐴 𝐵 ∈ [𝑥]𝑅 ↔ ∃𝑥 ∈ 𝐴 𝑥𝑅𝐵)) |
| 5 | 1, 4 | bitr4d 282 | 1 ⊢ (𝐵 ∈ 𝑉 → (𝐵 ∈ dom ≀ (𝑅 ↾ 𝐴) ↔ ∃𝑥 ∈ 𝐴 𝐵 ∈ [𝑥]𝑅)) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ↔ wb 206 ∈ wcel 2111 ∃wrex 3056 Vcvv 3436 class class class wbr 5093 dom cdm 5619 ↾ cres 5621 [cec 8626 ≀ ccoss 38228 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2113 ax-9 2121 ax-ext 2703 ax-sep 5236 ax-nul 5246 ax-pr 5372 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-sb 2068 df-clab 2710 df-cleq 2723 df-clel 2806 df-ral 3048 df-rex 3057 df-rab 3396 df-v 3438 df-dif 3900 df-un 3902 df-in 3904 df-ss 3914 df-nul 4283 df-if 4475 df-sn 4576 df-pr 4578 df-op 4582 df-br 5094 df-opab 5156 df-xp 5625 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-ec 8630 df-coss 38519 |
| This theorem is referenced by: eldmqs1cossres 38763 |
| Copyright terms: Public domain | W3C validator |